Issue - 73 - "wsdl:fault" element not allowed with one-way operation

<portType name="BuyerPT"> 
    <operation name="AsyncPurchaseResponse"> 
        <input message="smsg:POResponse"/> 
        <fault name="tns:RejectPO" message="smsg:POReject"/> 
    </operation> 
    <operation name="AsyncPurchaseReject"> 
        <input message="smsg:POReject"/> 
    </operation> 
</portType>